thanks for inviting us into your home. that's it for this special report, fair, balanced and unafraid. >> they were just six years old and among the dozens of innocents murdered in their school. >> they're babies. they're babies. they're just babies. >> tonight heartbreaking good-byes in connecticut. investigators say they are looking at every bullet, anding every angle. >> the gun processing the evidence, analyzing the evidence. >> from the wreckage much ruined lives, trying to piece together understanding of how this happened. plus what, we've learned with friday's first victim. the shooter's own mother. she told me the guns, she would take them shooting because that was a way that a single mom could, you know, relate to her son. >> she was devoted and that was her job, to look after him. >> tonight the inside story from the family's friends and neighbors. i'm john scott in for shepard smith. we begin with the search for a motive. it is clear friday's shooting in newtown, connecticut can have no rational explanation. the